cellular respiration Flashcards
where does glycolysis occur
cytoplasm
does glycolysis require oxygen
no
how many atp is used during glycolysis
2
product of glycolysis
2 pyruvate, 2 nadh, 2 atp, 2 water
krebs cycle is also known as
citric acid cycle/tricarboxylic acid cycle
what needs to be done before krebs cycle
convert pyruvate to acetrl Coenzyme A through pyruvate oxidation
product of pyruvate oxidation
2 nadh, 2 co2, 2 acetyl CoA
to what does acetyl CoA bind to at the start of krebs cycle
oxaloacetate
where does krebs cycle occur
mitochondrial matrix
products of krebs cycle
2 ATP, 6 NADH, 2 FADH2, 4 co2
use of energy in a H+ gradient to drive cellular work
chemiosmosis
where does oxidative phosphorylation occur
cristae of mitochondria
product of chemiosmosis
26 - 28 atp, 6 water
final electron acceptor of etc
oxygen
oxidation vs reduction
oxidation: loses e-,
reduction: gains e-
what is oxidized and reduced in cellular respiration
oxidized: glucose to carbon dioxide
reduced: oxygen to water
anabolic vs catabolic pathway
catabolic: release energy by breaking complex molecules into simpler compounds
anabolic: consume energy to build complex molecules from simpler molecules
cellular respiration is an example of __ pathway
catabolic
general equation of cellular respiration
C6H12O6 + 6O2 -> 6CO2 + 6H2O + Energy
uses ETC with final electron acceptor other than oxygen ex: sulfate
anaerobic respiration
uses substrate-level phosphorylation instead of etc to produce atp, only involves glycolysis
fermentation
obligate vs facultative anaerobes
obligate: cannot survive in presence of oxygen
facultative: can do aerobic or anaerobic
alcohol fermentation
pyruvate -> ethanol through release of co2
example of alcohol fermentation
uses yeast and used for brewing, winemaking, baking
lactic acid fermentation
pyruvate reduced to nadh, end product: lactate
is there co2 released in lactic acid fermentation
no
example of lactic acid fermentation
fungi/bacteria are used to make cheese and yogurt
muscle cramps
can proteins be used for cellular respiration
yes
can fats be used for cellular respiration
yes
can proteins be directly used for cellular respiration
no, must be digested to amino acid first before it can be used in glycolysis/krebs cycle
types of fats used in cellular respiration
glycerol for glycolysis
fatty acid - broken down by beta oxidation to be used in generating acetyl CoA for pyruvate oxidation
